Marine ventilator



Jan. 8, 1963 G. M. BREIDERT 3,072,039

MARINE VENTILATOR Filed May 1, 1961 2 Sheets-Sheet 1 351g, 1 INVENTOR.

' GEORGEM.BPEI.DEF?7 ATTORNEYS ilnited States Patent Office 3,h72,fi?$9 Patented Jan. 8, 1963 3,672,039 MARENE VENTILATGR George M. Breidert, Granada Hills, Caliil, assignor to The G. C. Breidert Co., San Fernando, Calif, a corporation of California Filed May 1, 1961, Ser. No. 166,579 1 Claim. (Cl. 9882) This invention has to do with ventilator devices, and relates more particularly to a ventilator embodying improvements which render it particularly advantageous for use on boats, to exhaust stale air from such boat compartments as the galley, or to exhaust explosive gases from the engine room.

Conventional ventilators, when mounted on boats, are so designed and constructed that they often admit water to the compartment being ventilated because of the spray which results when the boat is being operated in heavy seas. Also, where the ventilators are of the type in which extraneous air currents blowing about the exterior of the ventilator induce exhaust of the stale air between adjacent louvers of the ventilator, it is sometimes desirable to compensate for high winds by varying the capacity of the ventilator.

It is, therefore, an object of my present invention to provide an improved ventilator which incorporates novel means for preventing water from entering a boat compartment through the ventilator, and which also enables the capacity of the ventilator to be varied at will.

Other objects and corresponding advantages will appear hereinafter.

While I shall point out in the appended claim the features which I believe to be new, I shall now, for the purpose of explaining my invention, describe a presently preferred embodiment thereof, for which purpose I shall refer to the accompanying drawing wherein:

FIG. 1 is a perspective view showing a boat having my ventilator device mounted thereon;

FIG. 2 is a side elevational view of my ventilator device; I

FIG. 3 is an enlarged cross sectional view taken on line 33 of FIG.

FIG. 4 is a reduced section taken on line 44 of FIG. 3;

FIG. 5 is a sectional view showing the damper portion of my ventilator device in open position, and

FIG. 6 is a fragmentary side elevational view taken on line 6-6 of FIG. 4.

Referring now to the drawing, I show at 5 a ventilator device embodying my invention and having an air inlet neck presenting, at its bottom end, a radially disposed peripheral attaching flange 16, for attachment to a boat B or the like, in communication with an air exhaust opening in the boat.

Secured to the neck, between the ends of the latter, there is an annular base plate 18 to which are secured, as by welding or in any other suitable manner, the bottom ends of two circumferential rows of louvers, the louvers or" the inner row being designated by the numeral 19, and the louvers of the outer row being designated by the numeral 2%. The louvers of said rows are radially spaced in staggered relationship to provide air passageways 21 therebetween.

A flat top-plate 25 is supported upon and secured to the top ends of the louvers, as by welding or in any other suitable manner, and a conical cover 27, which acts as a deflector for downwardly moving air currents, is secured to the top-plate 25, as by welding or in any other suitable manner; the cover 27 having a depending peripheral flange 28.

The ventilator construction which I have thus far described is for the most part conventional in form, the

plate 16, the louvers 2t and the top-plate 25 together defining a hollow body which is normally in communication with the boat compartment, not shown, being ventilated. As extraneous air currents blow exteriorly about the body, they create a relatively reduced pressure at the outlets of the passageways 21 between contiguous edges of the louvers 20, to induce air from the interior of the boat through said passageways.

The feature of my ventilator, to which the present invention relates more particularly, consists of the novel means which I provide for closing or sealing the neck 15, as is often desirable when the body is operating in high seas, to prevent Water spray from entering the boat between the louvers, as well as for varying the capacity of the ventilator to compensate for high and low velocity winds.

Said improvements, in their presently preferred form, comprise a damper plate 3t? of larger diameter than the neck 15 and adapted to seat against the top edge of the neck when the damper plate is in its lowermost position (FIGS. 4 and 6) whereby to provide a seal.

For the purpose of vertically moving the damper plate 30 within the body relative to the neck, I provide a pair of diametrically opposite arms or handles 35 and 36 which are secured at their inner ends to the damper plate as by rivets 37. Arm 35 has two right angled bends 35a, 35b and terminates in looped portion 350 disposed to be grasped manually by the operator.

The opposite arm 36 is like arm 35 except that its bends are in the opposite direction from the bends 35a, 3511, so that the portions 40, 41 of the respective arms are circumferentially offset. That is, the inner end portion of each arm extends radially between two contiguous louvers l9 and the outer end portion of each arm extends between contiguous louvers 29 of the outer row. Thus, the outer extremity portions of the handles are somewhat circumferentially offset.

The portions 40, 41 of the respective arms are vertically slidable between contiguous outer louvers. Each of the diametrically opposite louvers 20a, 20b has longitudinally spaced, laterally disposed bayonet-shaped slots 50 into which the respective arm portions 40, 41 may be engaged to retain the damper plate in any desired position of adjustment.

in operation, when it is desired to have the ventilator operate at unrestricted capacity, the arm portions 40, 41 are selectively engaged in the top slot 50. If it be desired to restrict the capacity without closing the inlet neck of the ventilator, the arm portions 49, 41 will be engaged in the intermediate slot 50. When it is desired entirely to close or seal the inlet neck to prevent water from entering the compartment being ventilated, the arm portions 4%, 41 are engaged in the bottommost slot 50, in which position the damper plate is retained in seating or sealing engagement with the top edge of the neck 15. Of course, in order to engage the arm portions 40, 41 in, or disengage them from, the respective slots 50, it is necessary slightly to rotate the damper plate 30.

I claim:

In a marine ventilator, an annular hollow body comprised of a top wall, a bottom wall having an axial opening therethrough, and radially spaced inner and outer rows of vertically disposed circumferentially spaced louvers, the louvers of one of said rows being staggered with relation to the louvers of the other of said rows, and diametrically opposite ones of said louvers of said outer row having longitudinally spaced lateral slots, an air inlet neck extending into said body through said opening in said bottom wall, a damper plate mounted for vertical movement in said body selectively into and out of sealing engagement with said neck, manually operable means for moving said damper plate including a pair of diametrically References Cited in the file of this patent UNITED STATES PATENTS Hooper Jan. 7, 1930 Lutton Oct. 9, 1951 

